John Field

I am a Lead Integration Developer with extensive experience delivering API-led address and enterprise integrations across multi-brand luxury retail platforms. I specialise in owning low-level integration architecture, including canonical data models, API contracts, and system boundaries to support high-volume, business-critical transaction flows.

I have led the design and delivery of integration landscapes across retail, ERP, CRM, and eCommerce systems, working closely with solution architects to translate enterprise designs into scalable, resilient implementations. I defined and implemented a Centre for Enablement (C4E) integration model and established reusable API and DataWeave standards to reduce point-to-point complexity.

Technically, I have implemented asynchronous messaging patterns (AMQP/RabbitMQ), OAuth2/JWT secure API patterns, CI/CD pipelines with Jenkins, and modernised legacy components prioritising security and performance. I have hands-on experience with MuleSoft (Anypoint Platform, Studio, API Manager), C#, .NET Core, .NET Framework, and platform integrations including Salesforce and BigCommerce.

I have acted as a senior technical point of contact and people leader, mentoring developers, conducting code reviews, and advising stakeholders on feasibility and risk. I deliver pragmatic solutions focused on resilience, peak-trading performance, and operational stability.